Electronic blackboard; electronic whiteboards; electronic interactive whiteboards; electronic notice boards; digital signs; monitors, namely, computer monitors, baby monitors, battery monitors, television monitors, touchscreen monitors; downloadable computer programs for use in multiple level user account management, schedule arrangement for media contents delivery, contents uploading, playlist editing, device management, proof of playback, central management of contents and devices from anywhere, video wall layout creation and management; downloadable software application programs for use in multiple level user account management, schedule arrangement for media contents delivery, contents uploading, playlist editing, device management, proof of playback, central management of contents and devices from anywhere, video wall layout creation and management; downloadable computer software application programs for use in multiple level user account management, schedule arrangement for media contents delivery, contents uploading, playlist editing, device management, proof of playback, central management of contents and devices from anywhere, video wall layout creation and management; recorded and downloadable computer screen saver software; video screens; interactive touch screen terminals; recorded and downloadable computer software platforms for use in multiple level user account management, schedule arrangement for media contents delivery, contents uploading, playlist editing, device management, proof of playback, central management of contents and devices from anywhere, video wall layout creation and management; liquid crystal displays; touch screens; light emitting diode (LED) displays; touch panels; computer hardware